Ty Dillon, driver of the #3 Bass Pro Shops/Tracker Boats Chevrolet, drives on the dirt surface during practice for the NASCAR Camping World Truck Series inaugural CarCash Mudsummer Classic at Eldora Speedway on July 23, 2013 in Rossburg, Ohio. less

Ty Dillon, driver of the #3 Bass Pro Shops/Tracker Boats Chevrolet, drives on the dirt surface during practice for the NASCAR Camping World Truck Series inaugural CarCash Mudsummer Classic at Eldora Speedway on ... more

Fans watch during practice for the NASCAR Camping World Truck Series inaugural CarCash Mudsummer Classic at Eldora Speedway on July 23, 2013 in Rossburg, Ohio.

Fans watch during practice for the NASCAR Camping World Truck Series inaugural CarCash Mudsummer Classic at Eldora Speedway on July 23, 2013 in Rossburg, Ohio.

Photo: Chris Graythen, NASCAR Via Getty Images

Fans watch during practice for the NASCAR Camping World Truck... Photo-4954512.66926 - seattlepi.com

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Crew members of the #19 Reese Towpower Ford, driven by Dave Blaney, prepare for practice for the NASCAR Camping World Truck Series inaugural Mudsummer Classic at Eldora Speedway on July 23, 2013 in Rossburg, Ohio. less

Crew members of the #19 Reese Towpower Ford, driven by Dave Blaney, prepare for practice for the NASCAR Camping World Truck Series inaugural Mudsummer Classic at Eldora Speedway on July 23, 2013 in Rossburg, ... more

Jeb Burton, driver of the #4 Arrowhead Chevrolet, drives on the dirt suface during practice for the NASCAR Camping World Truck Series inaugural CarCash Mudsummer Classic at Eldora Speedway on July 23, 2013 in Rossburg, Ohio. less

Jeb Burton, driver of the #4 Arrowhead Chevrolet, drives on the dirt suface during practice for the NASCAR Camping World Truck Series inaugural CarCash Mudsummer Classic at Eldora Speedway on July 23, 2013 in ... more

A detail view of the Goodyear Racing tire made for dirt track racing during practice for the NASCAR Camping World Truck Series inaugural CarCash Mudsummer Classic at Eldora Speedway on July 23, 2013 in Rossburg, Ohio. less

A detail view of the Goodyear Racing tire made for dirt track racing during practice for the NASCAR Camping World Truck Series inaugural CarCash Mudsummer Classic at Eldora Speedway on July 23, 2013 in ... more

Photo: Chris Graythen, NASCAR Via Getty Images

A detail view of the Goodyear Racing tire made for dirt track... Photo-4954511.66926 - seattlepi.com

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James Buescher, driver of the #31 Rheem Chevrolet drives during practice for the NASCAR Camping World Truck Series inaugural CarCash Mudsummer Classic at Eldora Speedway on July 23, 2013 in Rossburg, Ohio.

James Buescher, driver of the #31 Rheem Chevrolet drives during practice for the NASCAR Camping World Truck Series inaugural CarCash Mudsummer Classic at Eldora Speedway on July 23, 2013 in Rossburg, Ohio.

Ryan Blaney, driver of the #29 Cooper Standard Ford, stands in the garage area during practice for the NASCAR Camping World Truck Series inaugural CarCash Mudsummer Classic at Eldora Speedway on July 23, 2013 in Rossburg, Ohio. less

Ryan Blaney, driver of the #29 Cooper Standard Ford, stands in the garage area during practice for the NASCAR Camping World Truck Series inaugural CarCash Mudsummer Classic at Eldora Speedway on July 23, 2013 ... more

Scott Bloomquist, driver of the #51 ToyotaCare Toyota, prepares to drive during practice for the NASCAR Camping World Truck Series inaugural CarCash Mudsummer Classic at Eldora Speedway on July 23, 2013 in Rossburg, Ohio. less

Scott Bloomquist, driver of the #51 ToyotaCare Toyota, prepares to drive during practice for the NASCAR Camping World Truck Series inaugural CarCash Mudsummer Classic at Eldora Speedway on July 23, 2013 in ... more

John Wes Townley, driver of the #7 Zaxby's Toyota, gets out of his car during practice for the NASCAR Camping World Truck Series inaugural CarCash Mudsummer Classic at Eldora Speedway on July 23, 2013 in Rossburg, Ohio. less

John Wes Townley, driver of the #7 Zaxby's Toyota, gets out of his car during practice for the NASCAR Camping World Truck Series inaugural CarCash Mudsummer Classic at Eldora Speedway on July 23, 2013 in ... more